Month: January 2018

Recently I had a Western Digital NAS Red 3TB HDD failed in my server. Server HDDs are connected via MegaRAID SAS 9271-8i HW RAID controller. I have a spare 3TB HDD standing by. But when I tried to set the failed HDD as “removal”… it keeps automatically go into rebuild …..

I recently replaced my home router with a MikroTik router. I further split servers into two groups. 192.168.0.0/24 – Production 192.168.0.1/24 – Dev My Zabbix server sits in production network and some Zabbix clients sits in dev network. For some reason there is some kind of NAT issue preventing Zabbix …..

At one of my my previous work places we utilize multiple Dell SonicWALL network devices. I’ve written an Expect plus a BASH script (yes, two scripts) that can be cron job to auto backup configurations. We needed the Expect script to interact with SonicWall SSH session. By looking at the …..

Munin is a great resource monitoring tool. However, it can easily max out the server resource depending on number of monitored devices. I’ve ran into some disk I/O contention issue on my Munin server. I don’t even have that many monitored devices… only eighteen. There are couple ways to …..